Deep-well pump.



IN. B. HEwITI.

DEEP WELL PUMP.

APPLICATION FILED IAN.3I.

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Patented Sept. 12, 1916.

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UNITED STATES PATENT OFFICE.

WILLIAM B. HEWITT, OF I-IOLYOKE, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN MENTS, T0 WORTHINGTON PUMP AND MACHINERY CORPORATION, OF NEW YORK,

N. Y., A CORPORATION OF VIRGINIA.

DEEP-WELL PUMP.

Application led January 31, 1914.

'o all whom it may concern.'

Be it known that I, TWILLIAM B. HEWITT, a citizen of the United States, residing at Holyoke, county of Hampden, and State of liassachusetts, have invented certain new and useful Improvements in Deep-Well Pumps, fully described and represented in the following specification and the accompanying drawings, forming a part of tl same.

This invention relates to that class of pumps used especially for deep well pumping, in which a plurality of reciprocating buckets or plungers act on the liquid successively, the object of the invention being to provide an improved power pump of this class, in which the operating connections for the buckets or plunger-s shall be simple, strong and durable, and all the working parts kept free from sand or grit carried in suspension by the liquid, the bucket rods shall be kept lubricated and a high volumetric etiiciency of the pump be secured.

The invention aims particularly at the production of a satisfactory triple acting power pump securing the above results.

In the accompanying drawings forming a part of this specification, a triple acting deep well pump embodying the invention in its preferred form is shown, and this construction will now be described in detail and the features forming the invention then speciically pointed out in the claims.

In the drawings, Figure 1 is a front view of the pump with the pump head in elevation and the pump well inA section, with parts of the bucket rods broken away to show the construction. Fig. 2 is a vertical cross section on the line 2 of Fig. 1. Fig. 3 is a detail section of two of the buckets, the bucket rods and the arrangement for lubrication. Fig. 4 is a detail of the bucket rod packing.

Referring to said drawings, the frame 10 of the pump head is mounted above the well 11 and carries the crank shaft 12, shown as driven by gear 13 from power' shaft 14 and pinion 15. The crank shaft 12 carries three separate cranks for operating the three buckets, these cranks being set 120 degrees apart, and connected to the respective buckets as follows: The lmiddle crank 16 is connected by its crank rod 17 and sliding cross vhead 18 directly to the bucket rod 19 Specification of Letters Patent.

Patented Sept. 12, 1916.

Serial No. 815,619.

connected to the bottom bucket 20. Outside the crank 16 are the cranks 21, 21 connected by their crank rods 22, 22 and sliding cross heads 23, 23 to rods 24, 24 and yoke 25 attached to the tubular bucket rod 26 which in turn carries the intermediate bucket 27. Outside the cranks 21 are the cranks 28 connected by their crank rods 29, 29 and sliding cross heads 30, 30 to rods 31, 31 and yoke 32 to which is attached the tubular bucket rod 33 which carries the top bucket 34. The rod 33, with the inclosed concentric rods 26 and 19, moves through the discharge head 35 at the top of the drop tube 36 within the well, a suitable stufling boX 37 being provided and the discharge head 35 having a delivery pipe 38.

The above construction provides for the balancing of the buckets and also the balancing of the connections from the buckets to the crank shaft so that side thrusts are eliminated, a high mechanical efficiency is secured, and the wear of the working parts considerably reduced. The construction further provides for convenient access to the working parts and withdrawal upward of the well portions of the pump, by the enlargement of the upper portion of the well and opening of this enlarged portion and frame 10 at the front, and by the removability of the front plate forming one of the two front and rear cross heads 58 and 59, this front plate being secured by bolts 60 or otherwise, as desired. This result is aided also by the setting of the crank shaft 12 slightly to the rear ofthe bucket rods, so as to provide more room at the front of the pump for lifting the working parts from the well, this offsetting at the same time permitting the use of somewhat shorter connecting rods and securing a quicker downstroke and more uniform and slower upstroke. The pump as thus far described is that of my Letters Patent No. 1,102,583, dated July 7th, 1914.

The pump brackets 20, 27 and 34 are provided with the usual packing rings 39, 39, 39; but in addition thereto the two upper buckets 27 and 34, as shown in Fig. 3, are provided with internal guides and packing glands carried within the respective couplings 40 and 41. As shown in Fig. 4, the coupling 40 carries internally a centering guide ring 42 in which the rod 19 has its bearing; a suitable packing ring 43 is mountcd about the guide ring and prevents the passage of water downward from the space between rods 19 and 25 into the chamber between the buckets Q0 and 27; and a similar ring 44 is mounted below the guide ring and prevents the upward movement of sand or grit. The guide ring 45, and packing rings 4G, 47 mounted within the coupling 41 are of similar construction and function; in this instance thc guide ring 45 forming a bearing for the tubular rod 26. One of the couplings or' rod 19 is shown in Fig. 3 at 48, located within the tubular rod 26, and 49 shows a similar coupling for rod 26 which is located within tubular rod 33. These couplings sometimes bear upon the rods which inclose them and it is of advantage to have these annular spaces between the rods filled with water or other lubricant. Inlet pipes 50 and 5l communicate with these spaces, as shown in Fig. 3, and the water, oil, or other lubricant may be supplied as desired by hose 53, while the pump is running and the hose then detached and valves 54, closed. The liquid in these spaces is prevented from flowing below the buckets by packing rings 43 and 46 described above. Air relief ,valves Jfor the annular spaces are provided at 5G and 57.

This construction prevents the grinding action of sand or grit carried in the liquid; the leakage or' liquid past the buckets; the loss of vacuum between the buckets; and thus provides not only for a high volumetric eiliciency of the pump, but also the maintenance or' such eiliciency in cases where the pump has to handle liquid containing sand in suspension. It also permits the continuous application of a lubricant to such working parts as are liable to have frictional contact.

lNhat is claimed is l. In a pump, a movable element comprising a bucket having a central bore and a tubular operating rod, a second and independently movable element comprising a second bucket and operating rod, the latter rod inclosed by and concentric to the first movable element, a ring mounted internally on the first element to form a bearing' for the rod of the second element, and a packing joint to prevent leakage past the said' bearing ring.

Q. In a pump, a movable element comprising a bucket having a central bore and a tubular operating rod, a second and independently movable element comprising a second bucket and operating rod, the latter rod inclosed by and concentric to the first movable element, a ring mounted internally on the first element to form a bearing for the rod of the second element, and a packing joint below the ring to prevent the move-r ment of sand into the bearing.

3. In a pump, a. movable element comprising a bucket having a central bore and a tubular operating rod, a second and independently movable clement comprising a second bucket and operating rod, the latter rod inclosed by and concentric with the first movable element, a ring mounted internally on the irst element to lorm. a bearing for the rod ot' the second element, and a packing lioint below the ring to prevent the movement of sand into the bearing, and a packing joint above the ring to prevent the escape oi' lubricant from the annular space between the rods.

4. In a pump, a movable element comprising a bucket having a central bore and a tubular operating rod, a second and independently movable element comprising a second bucket and operating rod, the latter rod inclosed by and concentric to the first movable element, means to supply a lubricant to the annular space between the rods, a ring mounted internally on the tubular operating rod at the bottom of the lubricant space to form a bearing for the rod of the second bucket, and a packing joint to prevent leakage past the bearing rino.

In testimony whereof, I have hereunto set mv hand, in the presence of two subscribing witnesses.

. WLLIAM B. HEWITT.

vWitnesses HENRY F. THORPE, J. L. PARKER.

copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, I). C. 

